As CMT's Alison Bonaguro wrote, the song is "about a girl obsessing over another girl because that girl stole her lover ... On the other hand, it could also be about a girl obsessing over the girl who is with the man that she wants but has never had." Bonaguro added that it is not a girl crush (on another girl) per se, but rather a girl desiring to taste her rival's lips in order to taste him and "to drown in her perfume, to have her long blond hair — and so on — all in an effort to get him back".
Lori McKenna stated that when she presented the idea to co-writer Liz Rose that Rose disliked the idea at first but that Rose changed her mind after hearing the first verse that Hillary Lindsey had written. Group members Kimberly Schlapman and Karen Fairchild heard the song and asked that it be saved for them.[Wikipedia]

And finally we have a classic from The Bellamy Brothers.

"Let Your Love Flow" reached #1 on the Billboard Hot 100 dated 1 May 1976, also crossing-over to the Billboard chart rankings for Hot Adult Contemporary Tracks with a peak of #2, and also for Hot Country Singles with a peak of #21. According to David Bellamy (quote): "There were a couple of guys from Holland [ie. the Netherlands] who were in town when the single was released, and our record company gave it to them to take home and they also sent it to Germany", [4] and "Let Your Love Flow" would in fact debut at #22 on the Dutch Top 30 chart dated 6 March 1976, the same date as the track's Billboard Top 40 debut at #38: the track would eventually peak at #6 on both the Dutch chart and Belgium's Flemish chart. In June and July 1976 "Let Your Love Flow" spent five weeks at #1 in Germany and also in Switzerland, while the track would be ranked at #1 on the monthly Austrian hit parades dated the 15th of August, September and October. "Let Your Love Flow" was afforded further European success with a seven-week tenure at #2 in both Norway and Sweden, while in the British Isles the track achieved chart peaks of #7 in the UK and #3 in Ireland. "Let Your Love Flow" also reached #1 on the hit parade for South Africa, #2 in New Zealand and #6 in Australia.[Wikipedia]